medium-post-simple-rest-06

index.js

app.put('/book/', [
    //File upload (karena pakai multer, tempatkan di posisi pertama agar membaca multipar form-data)
    upload.single('image'),

    //Set form validation rule
    check('isbn')
        .isLength({ min: 5 })
        .isNumeric()
        .custom(value => {
            return book.findOne({where: {isbn: value}}).then(b => {
                if(!b){
                    throw new Error('ISBN not found');
                }            
            })
        }
    ),
    check('name')
        .isLength({min: 2}),
    check('year')
        .isLength({min: 4, max: 4})
        .isNumeric(),
    check('author')
        .isLength({min: 2}),
    check('description')
     .isLength({min: 10})

],(req, res) => {
    const errors = validationResult(req);
    if (!errors.isEmpty()) {
        return res.status(422).json({ errors: errors.mapped() });
    }
    const update = {
        name: req.body.name,
        isbn: req.body.isbn,
        year: req.body.year,
        author: req.body.author,
        description: req.body.description,
        image: req.file === undefined ? "" : req.file.filename
    }
    book.update(update,{where: {isbn: req.body.isbn}})
        .then(affectedRow => {
            return book.findOne({where: {isbn: req.body.isbn}})      
        })
        .then(b => {
            res.json({
                "status": "success",
                "message": "Book updated",
                "data": b
            })
        })
})